Concrete-form.



S. R. McKAY.

CONCRETE FORM.

APPLiCATlDN FILED SEPT. 13, 1916-.

1,228,037. Patented May29,

- U sATn-s TTE CONCRETE-FORM.

Specification of Letters Patent.

Patented May 29, 1917.

Original application filed June 12, 1915, Serial No. 33,799. Divided and this application filed September 13,

1916. Serial No. 119,343.v

To all whom it may concern:

Be it known that I, STEWART R. McKAY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new anduseful Improvement in Concrete-F orms,' of which the following is a full, clear, and

exact description.

This invention relates to forms intended for use in building construction of the monolithic concrete type, wherein the forms generally comprise vertical posts with intermediate panels which with the posts provide a surface against which soft concrete may be laid.

The invention particularly relates to certain parts of the form construction, namely, the panels or boards, and their manner of cooperation with the vertical upright members between which the panels or boards extend.

The invention also contemplates a unit form construction whereby successive units may be conveniently assembled and placed relative to each other with accuracy.

Generally speaking, 'the invention comprises the elements and combinations thereof set forth in the accompanying claims.

i This case is a division of my coepending application, .Serial No. 33,799, filed June 12, 1915.

Reference should be had to the accompanying drawings forminga part of this specification, in which Figure 1 1s a perspective view embodying my invention; Fig. 2 is a transverse section through portions of the form of my invention; Fig. 3 is a front elevation of a portion of a form embodying my invention; Fig. 4 shows a modified form of panel for use with a form of my inven: tion, and Fig. 5 is a plan view of the assembled mold.

In general it may be explainedthat my invention relates to a form which is to be erected in proper position with respect to the foundations of a building forthe pur pose of forming the superstructure of monolithic concrete.

In the construction herein proposed the form may be dismantled by removing its component parts and the same form may be again. utilized and repeatedly utilized so long as the material itself w1ll last.

construction embodies vertical posts which are spaced apart and receive a se ries of panels 18 between them, which when assembled form a surface against which soft concrete may be laid. The distance which these posts may be spaced apart 1s not material to this invention, the dis tance be ng chosen to provide what may be a convenient space so that the panels 18 are not so large as to be unwieldy to handle. The number of elements 14, that is to say. thenumberof'posts in series, will depend entirely upon the length of the wall construction which is to be erected.

The-posts 14 are held in place with respect to each other, and properly spaced by any suitable means. A method by which these postsmay be secured and spaced is explained 1n my application, Serial No. 872,648, filed November 17, 1914.

The posts 14 may assume numerous forms, and their form is chosen largely withreference to the particular form of panel with whlch they are to coiiperate. In the present 1nstance,the post 14 is of hollow construction, having inwardly slanting sides 15, astraight extending portion 16, and a rearwardly extending portion 17. The panel 18, has slanting sides 19, and these sides terminate in a nose 20. When the panel 18 is' assembled with respect to the post 14, one of the slanting sides 19 will engage with a slanting side 15 of the post, while the nose 20 will lie against the straight portion 16 of the post.

Some clamping means is employed to hold the panel 18 with respect to post 14 and in this connection I have shown a form of clamping device which is'adapted for this purpose. I l

The rearwardly extending portion 17 of the post is provided with a circular opening 21 and slots 22 and 23 extending in opposite directions from the opening. A retaining member 24 extends within th'e'post 14. This member is provided with a head 25 and with outwardly extending parts 26, these last mentioned parts occupying a position upon the retaining member 24 in advance of'the head 25. At its outer end the member 24 is provided with a slot through which a wedge 27 is adapted to extend. This membar 24 may conveniently be formed from together as indicated at 28. Adjacent ends may be bent outwardly to form the head 25 and the portions 26 may be struck up from the metal forming the body of the retaining member 24. The size of the member 26 is such that it will pass through the opening 21, whereas the head 25 is of such size that it will not pass through the opening 21.

A yoke member 29 is adapted to straddle the portion 17 of the post 14 and the inner portions of this yoke or U-shaped member are beveled to cooperate with the slanting surfaces 19 of adjacent plates 2. The yoke 29 is provided with a slot as at 30, through which the. member 24 extends. When the wedge 27 is driven home the yoke member 29 is pushed inwardly to bear against the plates 18.

The cooperating beveled surfaces on the plate 18 and the post 14 are pushed tightly into engagement until the front surface of the post 14 and the surface of theplate 18 are in substantially the same plane.

The wedge 27 is provided with a head 27*, so that when the wedge is loosened it cannot drop out of the slot in the member 24 in which the wedge is seated. To remove the yoke 29 from its engagement with plates 18, the wedge 29 is pushed back so as to loosen its engagement with the yoke 29. The member 24 which has been occupying either slot 23 or 24 is pushed up or down until the head 26 is in line with the opening 21 in post 14. The head 26 can then be pulled through the hole 21 by the member 24, without engagement of the post 14 because the'head 25 will prevent this. However, the yoke 29 will be loosened sufficiently so that the plates 18 may be removed. It will thus be seen that the yoke 29 is held in definite relationship to the post 14, and the parts of. the yoke are always together, so that it becomes a simple and quick operation toplace the yoke and secure it with respect to plates 18.

In Fig. 4 I have shown a modified form of plate. This plate 32 is formed at the ends with converging surfaces 32 and 32 The converging surfaces meet at a nose. The plate 32 is very similar to plate 18, except that plate 18 has a flat nose 20, whereas the plate 38 has a pointed nose.

The plates 18 and 32 which have heretofore been described are all reversible, that is to say, either face of the plate may be Copies of this patent may be obtained for. five cents each, by addressing the Commissioner of Patents,

brought into contact with the beveled surfaces upon the post 14.

Having thus described my invention, what I claim is:

1. In a form for concrete construction, the combination of a pair of posts the adjacent surfaces of said posts being formed with slanting surfaces which diverge from each other toward the rear of the post; plates extending between adjacent posts, each of said plates being provided with a beveled surface that cooperates with the beveled surfaces upon the posts," each plate being provided with a nose that engages with the post when the plate is in final seated position; and a series of clamping means carried by each post and adapted to engage the plates upon opposite sides of the posts to hold the plates with respect to the posts.

2. In a form for concrete construction, the combination of a pair of posts the adjacent surfaces of said posts being formed with slanting surfaces which diverge from each other toward the rear of the posts; plates extending between adjacent posts, each of said plates being provided with oppositely eX- tending beveled surfaces, one of which surfaces cooperates with the beveled surface upon a post; and clamping means carried by the post and adapted to engage with beveled surfaces of plates upon opposite sides of the post to hold the plates with respect to the post.

3. In a form for concrete construction, the combination of a pair of posts the adjacent surfaces of said posts being formed with slanting surfaces which diverge from each other toward the rear of the posts; plates extending between adjacent posts, each of said plates at each end being provided with oppositely extending beveled surfaces which meet to form a nose, a beveled surface of each plate cooperating with a beveled surface upon the posts, the nose of each plate being in contact with a post when the plate is in final position with respect to the posts; and clamping means carried by each post and straddling each post to engage beveled surfaces of plates upon opposite sides of the post to hold the plates with respect to the post.

In testimony whereof, I hereunto affix my signature.

STEWART R. MoKAY.

Washington, D. G. 

